<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>扩展运算符应用</title>
</head>
<body>
  <div></div>
  <div></div>
  <div></div>
  <script>
    //1. 数组的合并
    const kuaizi = ['王太利','肖央'];
    const fenghuang =['曾毅','玲花'];
   
    // const zuixuanxiaopingguo = kuaizi.concat(fenghuang)
    const zuixuanxiaopingguo =[...kuaizi,...fenghuang]

    console.log(zuixuanxiaopingguo);

    //2.数组的克隆
    const sanzhihua = ['b','g','m'];
    const sanyecao = [...sanzhihua]; // ['b','g','m']
    console.log(sanyecao);

    //3.将伪数组转为真正的数组
    const divs = document.querySelectorAll('div');
    const divArr =[...divs];
    // console.log(divs);
    console.log(divArr);
 </script>
</body>
</html>